I read somewhere that a significant amount of 'less than honest' road users were registering their vehicles at a maildrop address, and tax and insuring them at the same address, so the anpr cameras never get a hit. The owner then uses the vehicle and picks up their mail every so often to see if there's a NIP in the air. Once there's a few against the numberplate, sell the vehicle and replace it with another, registered at the same address. This eliminates the problems of false plates, you don't know if, or how often, you've been flashed, and can't risk getting a tug from a patrol car/bike. It also leaves no paper trail if you pay the maildrop address by cash.
This is seems a surprisingly simple way of hitting back at all this technology they like to throw at us. By employing a small scally to collect your mail you avoid the 'unmarked car' watching the premises as well. Maybe I watch too many films.
